The theory and practice of modern framed structures : designed for the use of schools, and for engineers in professional practice (1897)
Johnson, J. B. (John Butler), 1850-1902, Bryan, C. W. (Charles Walter), 1863-1927, Turneaure, Frederick Eugene, 1886- · New York : J. Wiley & Sons · leaf 405
from under the ends of the arms, so that any form ofend lift which has to be adjusted for different conditions of temperature is usually left out ofadjustment, because it is impracticable to handle the bridge otherwise. There is another kind of end lift, suitable for short spans, which should be… … Fig. 395. In this form of end lift the bridge is first swung into line and latched ; then, by turningthe vertical shaft A, the wheels B revolve about their centres, and at the same time force thesuspended wheels W under the ends of the arms. Let Fig. 396 represent the motion of the parts of the end…
